Changes in Morphology of Selected Segments of the Vistula River Bed

The paper presents a reconstruction and an analysis of the Vistula river bed changes in the 19^th and 20^th centuries, performed on the basis of topographic maps. The analysis took into account both natural (floods, changes in rock-debris supply) and anthropogenic (e.g., river regulation, construction of water reservoirs) causes, which resulted in significant changes of the morphology of the Vistula river bed. To estimate the river bed changes the author used such parameters as: the length of the banks and changes of their location, the width of the river bed, and the surface of the river bed forms and their share in the river bed surface area.